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What is a circuit?

What is a circuit?. Patricia Grant June 20 , 2012. Objectives. Model the flow of electrons in a circuit Build an actual electric circuit Draw diagrams of electric circuits Explain how to tell when the path of an electric circuit is complete Test the conductivity of a variety of materials.

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What is a circuit?

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  1. What is a circuit? Patricia Grant June 20, 2012

  2. Objectives • Model the flow of electrons in a circuit • Build an actual electric circuit • Draw diagrams of electric circuits • Explain how to tell when the path of an electric circuit is complete • Test the conductivity of a variety of materials

  3. Standards • Organize data to support judgments about the advantages of series and parallel circuits (S4.A.2.1.4) • Use scientific thinking processes to conduct investigations and build explanations by observation, communication, comparing and organizing (S4.A.2.1.4)

  4. Electricity needs these to flow • A power supply (battery) • A closed circuit

  5. Diagram of complete circuit

  6. The circuit has: • Battery • Wires • Light bulb • Switch

  7. Open vs. Closed Circuit

  8. Key facts • A light bulb that is part of a complete circuit will light up. • Examples of circuits: lamp, fan, toaster, flashlight • Parallel circuits are circuits in which electrical current from the battery flows with equal voltage into two or more bulbs. • Series circuits are circuits in which electrical current from the battery flows through one bulb and then through another bulb. • Conductors conduct electrical current very easily because of their free electrons. • Examples: copper, aluminum, gold, and silver. • Insulators oppose electrical current and make poor conductors. • Examples: glass, air, plastic, rubber, and wood.

  9. Quiz time • Click forward to proceed • Click previous to go back to the key facts • Record your answers on the sheet of paper provided

  10. Will a light blub that is part of a circuit light up? Yes No

  11. Name two types of circuit

  12. Name examples of conductors

  13. Name two example of poor conductors

  14. What is a parallel circuit?

  15. What is series circuit?

  16. Check your answers!

  17. Interactive Demo • Click to try to complete your own circuit • Students can practice using the interactive circuit and try different ways to put a circuit together.

  18. Media Section 508 Larger material Larger font Power point as well as paper form for student to follow Headphones for hearing impaired • I will be using audio for the interactive lesson. I will provide caption as needed.

  19. Resources • http://www.electronicsandyou.com/electronics-images/circuit.gif • http://www.nasa.gov/images/content/298832main_circuit-xltn.jpg • www.oswego.edu/~dristle/PHY_206.../Electric_Circuits10.9t.pdf • http://www.onlybatteries.com/webimages/images/14086.jpg • http://dsmy2muqb7t4m.cloudfront.net/tuts/118_Lightbulb_Icon/32.jpg • http://www.sxc.hu/pic/m/c/ci/cieleke/827925_colorful_electric_wires.jpg • http://3.bp.blogspot.com/_83Ar9WcES2M/TUL0TkJ9gxI/AAAAAAAAAMA/Vp_Sf91ff_k/s1600/closed+switch.JPG

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